{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "adverse event", "arguments": ["Treatment.Drug", "Treatment.Route", "Treatment.Time_elapsed", "Subject.Gender", "Subject.Population", "Combination.Drug", "Subject.Race", "Subject", "Treatment.Freq", "Treatment.Duration", "Treatment.Dosage", "Subject.Disorder", "Treatment", "Treatment.Disorder"]}], "input": "An episode of subacute encephalopathy after the infusion of a moderate dose of methotrexate (1500 mg/m2) (MTX) is reported in a young adult with metastastic gastric cancer."}
{"adverse event": [{"Treatment.Drug": "methotrexate", "Treatment.Route": "NAN", "Treatment.Time_elapsed": "NAN", "Subject.Gender": "NAN", "Subject.Population": "NAN", "Combination.Drug": "NAN", "Subject.Race": "NAN", "Subject": "a young adult with metastastic gastric cancer", "Treatment.Freq": "NAN", "Treatment.Duration": "NAN", "Treatment.Dosage": "1500 mg/m2", "Subject.Disorder": "NAN", "Treatment": "a moderate dose of methotrexate (1500 mg/m2) (MTX)", "Treatment.Disorder": "metastastic gastric cancer"}]}